What is the mean CO2 emissions in g/km?

What is the mean CO2 emissions in g/km?

• A. 136.0 g/km
• B. 137.629 g/km
• C. 150.0 g/km
• D. 140.2 g/km

Answer: (B)

The mean CO2 emissions show the average emission per vehicle in the dataset. To find it, you sum all the CO2 emissions in g/km for every car and divide by the number of cars. In this data, that calculation yields 137.629 g/km, which is the value that best represents the typical emissions across the set. The other numbers come from using a different total, a different count, or rounding, and they don’t match the exact average computed from the data.

The mean CO2 emissions show the average emission per vehicle in the dataset. To find it, you sum all the CO2 emissions in g/km for every car and divide by the number of cars. In this data, that calculation yields 137.629 g/km, which is the value that best represents the typical emissions across the set. The other numbers come from using a different total, a different count, or rounding, and they don’t match the exact average computed from the data.